After exhibiting a steady positive trend in mid-morning trades, sustained buying has picked up, particularly, in tech and other select old economy stocks, with healthy gains seen in select banking stocks too. Although auto and select heavyweights continue to witness weak trends, the Sensex has moved up 26 points at 6,631. The Nifty, too, has shrugged off its range-bound trend and has added five points to 2,073.Wipro has advanced 3% (Rs 21) to Rs 694. While Satyam has gained 1.58% (Rs 7) to Rs 428, Infosys has inched up by Rs 8 to Rs 2,252 after a subdued opening trades.ICICI Bank is trading firm with a spurt of 3.80% (Rs 15) at Rs 421. While SBI is up a rupee at Rs 672, HDFC Bank at Rs 550 (down Rs 2) is still languishing in negative territory. HDFC at Rs 729 (up Rs 12 or 1.68%), L&T at Rs 1,035 (up Rs 13 or 1.25%), Reliance Energy at Rs 553 (up Rs 12 or 2.23%) and Hindalco at Rs 1,360 (up Rs 6) have registered further gains.Cipla has moved up 1.87% (Rs 5) to Rs 265, while Dr. Reddy's has gained 1.11% (Rs 8) to Rs 752.ONGC is up Rs 2 at Rs 882. Reliance is trading weaker by Rs 2 at Rs 563. ITC is down a per cent (Rs 8) at Rs 1,350, and HLL is down a rupee at Rs 131.Bajaj has tumbled 2% (Rs 23) to Rs 1,067. While Maruti has lost 1.79% (Rs 8) to Rs 425, Tata Motors is down 2% (Rs 9) at Rs 426. Hero Honda, however, is up with a steady gain of Rs 3 at Rs 547.HPCL has shed 3.49% (Rs 11) to Rs 311.